4051647 has 8 divisors (see below), whose sum is σ = 6002480. Its totient is φ = 2701080.

The previous prime is 4051633. The next prime is 4051667. The reversal of 4051647 is 7461504.

It is not a de Polignac number, because 4051647 - 2⁴ = 4051631 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 150061 = 4051647 / (4 + 0 + 5 + 1 + 6 + 4 + 7).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4051647.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4051667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75004 + ... + 75057.

It is an arithmetic number, because the mean of its divisors is an integer number (750310).

Almost surely, 2^4051647 is an apocalyptic number.

4051647 is a deficient number, since it is larger than the sum of its proper divisors (1950833).

4051647 is a wasteful number, since it uses less digits than its factorization.

4051647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150070 (or 150064 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 4051647 is about 2012.8703385961. The cubic root of 4051647 is about 159.4203898400.

The spelling of 4051647 in words is "four million, fifty-one thousand, six hundred forty-seven".